org.apache.activemq.transport.udp.DefaultBufferPool Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of activemq-core Show documentation
Show all versions of activemq-core Show documentation
The ActiveMQ Message Broker and Client implementations
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.activemq.transport.udp;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
/**
* A default implementation of {@link BufferPool} which keeps a pool of direct
* byte buffers.
*
* @version $Revision: 564814 $
*/
public class DefaultBufferPool extends SimpleBufferPool implements ByteBufferPool {
private List buffers = new ArrayList();
private Object lock = new Object();
public DefaultBufferPool() {
super(true);
}
public DefaultBufferPool(boolean useDirect) {
super(useDirect);
}
public synchronized ByteBuffer borrowBuffer() {
synchronized (lock) {
int size = buffers.size();
if (size > 0) {
return buffers.remove(size - 1);
}
}
return createBuffer();
}
public void returnBuffer(ByteBuffer buffer) {
synchronized (lock) {
buffers.add(buffer);
}
}
public void start() throws Exception {
}
public void stop() throws Exception {
synchronized (lock) {
/*
* for (Iterator iter = buffers.iterator(); iter.hasNext();) {
* ByteBuffer buffer = (ByteBuffer) iter.next(); }
*/
buffers.clear();
}
}
}